Calculate the first and second order angles for light of wavelength 400. nm and 700. nm of the grating contains 1.00 x 104 lines/cm.

and

, second order does not exist

Explanation:

n = Number of lines grating =

= Wavelength

m = Order

Distance between slits is given by

m = 1

We have the relation

m = 2

The first and second order angles for light of wavelength 400 nm are and .

m = 1

m = 2

Here so there is no second order angle for this case.

The first order angle for light of wavelength 700 nm are .

Second order angle does not exist.

hey , the answer is c